Viking Professional VGSO166, Service Manual

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®
© 2009 Viking Preferred Service
20
Troubleshooting Guide
Below and on the following page are some general guides should a problem be detected. Please refer to the
test procedures in this manual to determine the defective component.
Problem Probable Cause Correction
No oven operations
No display or lights
House breaker tripped
Defective oven wiring (shorted,
open, or burned)
Reset breaker
Repair or replace defective wiring
No burners working
Display lights and fans
work normally
Gas valve turned off
Igniter
Gas valve
Selector switch
Thermostat timer
Sensor
Turn valve to on position
Verify voltage to igniter
Verify resistance and current
Verify proper contacts close
Verify voltage to and from timer
Verify resistance
No bake Gas valve turned off
Igniter
Gas valve
Selector switch
Thermostat timer
Sensor
Turn valve to on position
Verify voltage to igniter
Verify resistance and current
Verify contacts are closed
Verify voltage to and from timer
Verify resistance
No broil Gas valve turned off
Igniter
Gas valve
Selector switch
Thermostat timer
Sensor
Turn valve to on position
Verify voltage to igniter
Verify resistance and current
Verify contacts are closed
Verify voltage to and from timer
Verify resistance
No convection bake Gas valve turned off
Igniter
Gas valve
Selector switch
Thermostat timer
Sensor
Turn valve to on position
Verify voltage to igniter
Verify resistance and current
Verify contacts are closed
Verify voltage to and from timer
Verify resistance
No convection broil Gas valve turned off
Igniter
Gas valve
Selector switch
Thermostat timer
Sensor
Turn valve to on position
Verify voltage to igniter
Verify resistance and current
Verify contacts are closed
Verify voltage to and from timer
Verify resistance
No convection fan Convection fan
Selector switch
Thermostat timer
Wiring
Verify voltage and resistance
Verify contacts are closed
Verify voltage to and from timer
Repair or replace defective wiring
No lights Defective bulb
Oven light switch
Defective or broken wiring
Check for 120 VAC to the lights
Verify light switch changes states when switch is pushed
Repair or replace defective wiring
Service Diagnostics and Procedures